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Math Help - Chk Anwser to evaluate integral Problem

  1. #1
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    Chk Anwser to evaluate integral Problems

    Evaluate \int \frac{x^3+4}{x^2} dx

    \int(\frac{x^3+4}{x^2})dx = \frac{x^2}{2}-\frac{4}{x}+C

    Evaluate \int 2cos^2x dx

    \int 2cos^2x dx = x + cos(x)sin(x)
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  2. #2
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    Quote Originally Posted by Yogi_Bear_79
    Evaluate \int \frac{x^3+4}{x^2} dx

    \int(\frac{x^3+4}{x^2})dx = \frac{x^2}{2}-\frac{4}{x}+C

    Evaluate \int 2cos^2x dx

    \int 2cos^2x dx = x + cos(x)sin(x)
    You can always check these by taking the derivative of your answer.

    Both of these are correct. (With the comment that you need a constant of integration in your second answer.)

    -Dan
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